Abbott-Smith Manual Greek Lexicon
ἐφ-άπαξ (G2178)
5 * ἐφ-άπαξ , adv. once for all (Eupol.): Ro 6:10 He 7:27 9:12 10:10 . at once : I Co 15:6 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain
Strong's G2178 · Greek
ἐφάπαξ
ephapax · ef-ap'-ax
from 1909 and 530; upon one occasion (only)